UFC heavyweight champion Junior Dos Santos will make the first defense of his title on May 26 against Alistair Overeem at UFC 146.

The UFC made the fight official on Tuesday.

The bout between Dos Santos and Overeem had already been rumored by UFC owner Lorenzo Fertitta earlier this year, but the confirmation on Tuesday means that fight contracts are in place and the fight will happen in May.

Junior Dos Santos claimed the UFC heavyweight title with a rousing victory over former champion Cain Velasquez in November last year at the first ever UFC on Fox event.

Dos Santos crushed Velasquez with a big overhand punch, putting the former Arizona State wrestler down and out early in the first round...